Patents Assigned to George K. McDonald
  • Brush stick
    Patent number: 4214346
    Abstract: A brush stick for cotton gins is made of a expanded, rigid thermoplastic having closed cells on the interior and a dense, non-cellular skin. The stick is mounted on a cylinder and is used to doff cotton from a saw cylinder.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: July 29, 1980
    Assignee: George K. McDonald
    Inventor: George K. McDonald